Founded in 1942, the focus of MLS has always been in providing the best cast iron repairs in the world.  Our pioneering effort in the development of metal locking has led to world-wide recognition and our current customer list exceeds 2,000 companies.  With service completed on 6 of 7 continents, it’s a safe bet that we will be there when you need us:   On-site, On-time, Anytime.

Our core competency lies in our repair of industrial cast iron, historical cast iron, hydroelectric castings, and locomotive engines.  

O.E.M. Locomotive Engine approved repairs include the following:

- Crosshead Guides (standard, high-style and top-deck)
- Crankcase Windows (standard and extended)
- Side Walls
- Pan Rails
- Interior Walls and Ribs
- Lube Oil Headers
- Cam Bores
- Power Assembly Seal Bores (upper and lower)
- Mounting Feet & Generator Horns

We supplement our cast iron repair and in-house machining efforts with on-site and in-situ machining and inspection. 20 years of focused effort and equipment acquisition has increased our market share to the point that we are a top-5 national supplier of services.

Metal Locking Service Inc.

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